Patent SG-11201804888W-A (SG)
Title: Velocity model update with an inversion gradient
Inventor: Crawley Sean
IPC: G01V1/30
Filed: 2016-12-09
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property -, Organization 11111111011110111010101111101011111111101111111110110101111101111101111011111 International Bureau ... .... ..Yjd (10) International Publication Number (43) International Publication Date ...... ...\" WO 2017/098026 Al 15 June 2017(15.06.2017) WIPO I PCT (51) International Patent Classification: (81) Designated States (unless otherwise indicated, for every GO1V 1/30 (2006.01) kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, (21) International Application Number: BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, PCT/EP2016/080530 DO, DZ, EC, EE, EG, ES, FL GB, GD, GE, GH, GM, GT, (22) International Filing Date: HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, 9 December 2016 (09.12.2016) KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, (25) Filing Language: English NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, (26) Publication Language: English RU, TH, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, (30) Priority Data: ZA, ZM, ZW. 62/265,657 10 December 2015 (10.12.2015) US 15/364,585 30 November 2016 (30.11.2016) US (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, (71) Applicant: PGS GEOPHYSICAL AS [NO/NO]; P.O. GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, Box 251, Lilleaker, 0216 Oslo (NO). TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, (72) Inventors: CRAWLEY, Sean; 15150 Memorial Drive, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, Suite 100, Houston, TX 77079 (US). RAMOS- EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MARTINEZ, Jaime; 15150 Memorial Drive, Suite 100, Houston, TX 77079 (US). VALENCIANO MAVILIO, SM, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, — Alejandro, Antonio; 15150 Memorial Drive, Suite 100, GW, KM, ML, MR, NE, SN, TD, TG). — _ Houston, TX 77079 (US). CHEMINGUI, Nizar; 15150 Published: Memorial Drive, Suite 100, Houston, TX 77079 (US). — with international search report (Art. 21(3)) — Agent: GILL JENNINGS & EVERY LLP; The before the expiration of the time limit for amending the (74) Broadgate Tower, 20 Primrose Street, London EC2A 2ES claims and to be republished in the event of receipt of (GB). amendments (Rule 48.2(h)) = Title: VELOCITY MODEL UPDATE WITH AN INVERSION GRADIENT (54) 426 422 r l S ie -\"--- r -1 - IN = — — 436 = = _ - `440 = -433 1-1 el © ot 0, © IN Fig. 4B 1-1 (57) : The present disclosure is related to a velocity model update with a full waveform inversion gradient. At least one 0 method can include updating a velocity model of a subsurface, which can include suppressing high wavenumber components of the \" velocity model provided by reflected energy with a decomposed full waveform inversion gradient. Low wavenumber components 0 can be preserved in the velocity model.